mirror of
https://github.com/searxng/searxng.git
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136 lines
4.2 KiB
Python
136 lines
4.2 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# pylint: disable=too-many-branches
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"""In addition to rewriting/replace reslut URLs, the *hoostnames* plugin offers
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other features.
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- ``hostnames.replace``: A mapping of regular expressions to hostnames to be
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replaced by other hostnames.
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- ``hostnames.remove``: A list of regular expressions of the hostnames whose
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results should be taken from the results list.
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- ``hostnames.high_priority``: A list of regular expressions for hostnames whose
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result should be given higher priority. The results from these hosts are
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arranged higher in the results list.
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- ``hostnames.lower_priority``: A list of regular expressions for hostnames
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whose result should be given lower priority. The results from these hosts are
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arranged lower in the results list.
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Alternatively, a file name can also be specified for the mappings or lists:
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.. code:: yaml
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hostnames:
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replace: 'rewrite-hosts.yml'
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remove:
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- '(.*\\.)?facebook.com$'
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...
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low_priority:
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- '(.*\\.)?google(\\..*)?$'
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...
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high_priority:
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- '(.*\\.)?wikipedia.org$'
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...
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The ``rewrite-hosts.yml`` from the example above must be in the folder in which
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the ``settings.yml`` file is already located (``/etc/searxng``). The file then
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only contains the lists or the mapping tables without further information on the
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namespaces. In the example above, this would be a mapping table that looks
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something like this:
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.. code:: yaml
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'(.*\\.)?youtube\\.com$': 'invidious.example.com'
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'(.*\\.)?youtu\\.be$': 'invidious.example.com'
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"""
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import re
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from urllib.parse import urlunparse, urlparse
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from flask_babel import gettext
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from searx import settings
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from searx.plugins import logger
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from searx.settings_loader import get_yaml_file
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name = gettext('Hostnames plugin')
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description = gettext('Rewrite hostnames, remove results or prioritize them based on the hostname')
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default_on = False
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preference_section = 'general'
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plugin_id = 'hostnames'
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logger = logger.getChild(plugin_id)
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parsed = 'parsed_url'
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_url_fields = ['iframe_src', 'audio_src']
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def _load_regular_expressions(settings_key):
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setting_value = settings.get(plugin_id, {}).get(settings_key)
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if not setting_value:
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return {}
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# load external file with configuration
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if isinstance(setting_value, str):
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setting_value = get_yaml_file(setting_value)
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if isinstance(setting_value, list):
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return {re.compile(r) for r in setting_value}
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if isinstance(setting_value, dict):
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return {re.compile(p): r for (p, r) in setting_value.items()}
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return {}
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replacements = _load_regular_expressions('replace')
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removables = _load_regular_expressions('remove')
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high_priority = _load_regular_expressions('high_priority')
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low_priority = _load_regular_expressions('low_priority')
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def _matches_parsed_url(result, pattern):
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return parsed in result and pattern.search(result[parsed].netloc)
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def on_result(_request, _search, result):
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for pattern, replacement in replacements.items():
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if _matches_parsed_url(result, pattern):
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logger.debug(result['url'])
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result[parsed] = result[parsed]._replace(netloc=pattern.sub(replacement, result[parsed].netloc))
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result['url'] = urlunparse(result[parsed])
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logger.debug(result['url'])
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for url_field in _url_fields:
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if not result.get(url_field):
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continue
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url_src = urlparse(result[url_field])
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if pattern.search(url_src.netloc):
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url_src = url_src._replace(netloc=pattern.sub(replacement, url_src.netloc))
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result[url_field] = urlunparse(url_src)
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for pattern in removables:
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if _matches_parsed_url(result, pattern):
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return False
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for url_field in _url_fields:
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if not result.get(url_field):
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continue
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url_src = urlparse(result[url_field])
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if pattern.search(url_src.netloc):
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del result[url_field]
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for pattern in low_priority:
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if _matches_parsed_url(result, pattern):
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result['priority'] = 'low'
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for pattern in high_priority:
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if _matches_parsed_url(result, pattern):
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result['priority'] = 'high'
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return True
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